DTC B2602: Key Unlock Warning Switch Circuit Malfunction; DTC B2606: Key Code Confirm Signal Malfunction: Description

A key code confirmation signal (ON or OFF) is sent from the power source control ECU assembly to the multiplex tilt and telescopic ECU via the communication bus.

The multiplex tilt and telescopic ECU uses this signal to operate the auto away/return function.

DTC No.	Detection Item	Trouble Area
B2602	Both of the following conditions continue: A key code confirmation signal is off The engine switch is on (IG)	Multiplex communication system Smart access system with push-button start (for Start Function) Multiplex tilt and telescopic ECU
B2606	IG signals and/or key code confirmation signals are not received correctly.	Multiplex communication system Smart access system with push-button start (for Start Function) Multiplex tilt and telescopic ECU

DTC No.

Detection Item

Trouble Area

B2602

Both of the following conditions continue:

A key code confirmation signal is off

The engine switch is on (IG)

Multiplex communication system
Smart access system with push-button start (for Start Function)
Multiplex tilt and telescopic ECU

B2606

IG signals and/or key code confirmation signals are not received correctly.

Multiplex communication system
Smart access system with push-button start (for Start Function)
Multiplex tilt and telescopic ECU